private static ClientContext CreateContext(string contextUrl, ICredentials credentials)
{
ClientContext context;
if (!String.IsNullOrEmpty(Realm) && !String.IsNullOrEmpty(AppId) && !String.IsNullOrEmpty(AppSecret))
{
AuthenticationManager am = new AuthenticationManager();
context = am.GetAppOnlyAuthenticatedContext(contextUrl, Realm, AppId, AppSecret);
}
else
{
context = new ClientContext(contextUrl);
context.Credentials = credentials;
}
return context;
}
/// <summary>
/// Get an AuthenticationManager instance per host Url. Needed to make this work properly, else we're getting access denied
/// because of Invalid audience Uri
/// </summary>
/// <param name="url">Url of the site</param>
/// <returns>An instantiated AuthenticationManager</returns>
private AuthenticationManager GetAuthenticationManager(string url)
{
// drop the wild card if still there
Uri uri = new Uri(url.Replace("*", ""));
if (this.authenticationManagers.ContainsKey(uri.Host))
{
return this.authenticationManagers[uri.Host];
}
else
{
AuthenticationManager am = new AuthenticationManager();
this.authenticationManagers.TryAdd(uri.Host, am);
return am;
}
}
private static ClientContext CreateContext(string contextUrl, ICredentials credentials)
{
ClientContext context;
if (!String.IsNullOrEmpty(AppId) && !String.IsNullOrEmpty(AppSecret))
{
AuthenticationManager am = new AuthenticationManager();
if (new Uri(DevSiteUrl).DnsSafeHost.Contains("spoppe.com"))
{
context = am.GetAppOnlyAuthenticatedContext(contextUrl, Core.Utilities.TokenHelper.GetRealmFromTargetUrl(new Uri(DevSiteUrl)), AppId, AppSecret, acsHostUrl: "windows-ppe.net", globalEndPointPrefix:"login");
}
else
{
context = am.GetAppOnlyAuthenticatedContext(contextUrl, AppId, AppSecret);
}
}
else
{
context = new ClientContext(contextUrl);
context.Credentials = credentials;
}
context.RequestTimeout = Timeout.Infinite;
return context;
}
public static PnPClientContext CreatePnPClientContext(int retryCount = 10, int delay = 500)
{
PnPClientContext context;
if (!String.IsNullOrEmpty(AppId) && !String.IsNullOrEmpty(AppSecret))
{
AuthenticationManager am = new AuthenticationManager();
ClientContext clientContext = null;
if (new Uri(DevSiteUrl).DnsSafeHost.Contains("spoppe.com"))
{
clientContext = am.GetAppOnlyAuthenticatedContext(DevSiteUrl, Core.Utilities.TokenHelper.GetRealmFromTargetUrl(new Uri(DevSiteUrl)), AppId, AppSecret, acsHostUrl: "windows-ppe.net", globalEndPointPrefix: "login");
}
else
{
clientContext = am.GetAppOnlyAuthenticatedContext(DevSiteUrl, AppId, AppSecret);
}
context = PnPClientContext.ConvertFrom(clientContext, retryCount, delay);
}
else
{
context = new PnPClientContext(DevSiteUrl, retryCount, delay);
context.Credentials = Credentials;
}
context.RequestTimeout = Timeout.Infinite;
return context;
}
//
// gives the IAuthenticationModule a chance to update its internal state.
// do any necessary cleanup and update the Complete status of the associated Authorization.
//
internal void Update(HttpWebRequest httpWebRequest)
{
//
// RAID#86753
// [....]: this is just a fix for redirection & kerberos.
// we need to close the Context and call ISC() again with the final
// blob returned from the server. to do this in general
// we would probably need to change the IAuthenticationMdule public interface and
// add this Update() method. for now we just have it internally.
//
// actually this turns out to be quite handy for 2 more cases:
// NTLM auth: we need to clear the connection group after we suceed to prevent leakage.
// Digest auth: we need to support stale credentials, if we fail with a 401 and stale is true we need to retry.
//
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::Update() httpWebRequest#" + ValidationHelper.HashString(httpWebRequest) + " Authorization#" + ValidationHelper.HashString(Authorization) + " ResponseStatusCode:" + httpWebRequest.ResponseStatusCode.ToString());
if (Authorization != null)
{
PrepareState(httpWebRequest);
ISessionAuthenticationModule myModule = Module as ISessionAuthenticationModule;
if (myModule != null)
{
//
// the whole point here is to complete the Security Context. Sometimes, though,
// a bad cgi script or a bad server, could miss sending back the final blob.
// in this case we won't be able to complete the handshake, but we'll have to clean up anyway.
//
string challenge = httpWebRequest.AuthHeader(AuthenticateHeader);
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::Update() Complete:" + Authorization.Complete.ToString() + " Module:" + ValidationHelper.ToString(Module) + " challenge:" + ValidationHelper.ToString(challenge));
if (!IsProxyAuth && httpWebRequest.ResponseStatusCode == HttpStatusCode.ProxyAuthenticationRequired)
{
//
// don't call Update on the module, since there's an ongoing
// handshake and we don't need to update any state in such a case
//
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::Update() skipping call to " + myModule.ToString() + ".Update() since we need to reauthenticate with the proxy");
}
else
{
bool complete = true;
try {
complete = myModule.Update(challenge, httpWebRequest);
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::Update() " + myModule.ToString() + ".Update() returned complete:" + complete.ToString());
}
catch (Exception exception) {
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::Update() " + myModule.ToString() + ".Update() caught exception:" + exception.Message);
ClearSession(httpWebRequest);
#if !FEATURE_PAL
if ((httpWebRequest.AuthenticationLevel == AuthenticationLevel.MutualAuthRequired) &&
(httpWebRequest.CurrentAuthenticationState == null || httpWebRequest.CurrentAuthenticationState.Authorization == null || !httpWebRequest.CurrentAuthenticationState.Authorization.MutuallyAuthenticated))
{
throw;
}
#endif // !FEATURE_PAL
}
catch {
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::Update() " + myModule.ToString() + ".Update() caught exception: Non-CLS Compliant Exception");
ClearSession(httpWebRequest);
#if !FEATURE_PAL
if ((httpWebRequest.AuthenticationLevel == AuthenticationLevel.MutualAuthRequired) &&
(httpWebRequest.CurrentAuthenticationState == null || httpWebRequest.CurrentAuthenticationState.Authorization == null || !httpWebRequest.CurrentAuthenticationState.Authorization.MutuallyAuthenticated))
{
throw;
}
#endif // !FEATURE_PAL
}
Authorization.SetComplete(complete);
}
}
//
// If authentication was successful, create binding between
// the request and the authorization for future preauthentication
//
if (Module != null && Authorization.Complete && Module.CanPreAuthenticate && httpWebRequest.ResponseStatusCode != StatusCodeMatch)
{
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::Update() handshake is Complete calling BindModule()");
AuthenticationManager.BindModule(ChallengedUri, Authorization, Module);
}
}
}
//
// attempts to authenticate the request:
// returns true only if it succesfully called into the AuthenticationManager
// and got back a valid Authorization and succesfully set the appropriate auth headers
//
internal bool AttemptAuthenticate(HttpWebRequest httpWebRequest, ICredentials authInfo)
{
//
// Check for previous authentication attempts or the presence of credentials
//
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() httpWebRequest#" + ValidationHelper.HashString(httpWebRequest) + " AuthorizationHeader:" + AuthorizationHeader.ToString());
if (Authorization != null && Authorization.Complete)
{
//
// here the design gets "dirty".
// if this is proxy auth, we might have been challenged by an external
// server as well. in this case we will have to clear our previous proxy
// auth state before we go any further. this will be broken if the handshake
// requires more than one dropped connection (which NTLM is a border case for,
// since it droppes the connection on the 1st challenge but not on the second)
//
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() Authorization!=null Authorization.Complete:" + Authorization.Complete.ToString());
if (IsProxyAuth)
{
//
// so, we got passed a 407 but now we got a 401, the proxy probably
// dropped the connection on us so we need to reset our proxy handshake
// Consider: this should have been taken care by Update()
//
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() ProxyAuth cleaning up auth status");
ClearAuthReq(httpWebRequest);
}
return(false);
}
if (authInfo == null)
{
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() authInfo==null Authorization#" + ValidationHelper.HashString(Authorization));
return(false);
}
string challenge = httpWebRequest.AuthHeader(AuthenticateHeader);
if (challenge == null)
{
//
// the server sent no challenge, but this might be the case
// in which we're succeeding an authorization handshake to
// a proxy while a handshake with the server is still in progress.
// if the handshake with the proxy is complete and we actually have
// a handshake with the server in progress we can send the authorization header for the server as well.
//
if (!IsProxyAuth && Authorization != null && httpWebRequest.ProxyAuthenticationState.Authorization != null)
{
httpWebRequest.Headers.Set(AuthorizationHeader, Authorization.Message);
}
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() challenge==null Authorization#" + ValidationHelper.HashString(Authorization));
return(false);
}
//
// if the AuthenticationManager throws on Authenticate,
// bubble up that Exception to the user
//
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() challenge:" + challenge);
PrepareState(httpWebRequest);
try {
Authorization = AuthenticationManager.Authenticate(challenge, httpWebRequest, authInfo);
}
catch (Exception exception) {
Authorization = null;
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::PreAuthIfNeeded() PreAuthenticate() returned exception:" + exception.Message);
ClearSession(httpWebRequest);
throw;
}
catch {
Authorization = null;
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::PreAuthIfNeeded() PreAuthenticate() returned exception: Non-CLS Compliant Exception");
ClearSession(httpWebRequest);
throw;
}
if (Authorization == null)
{
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() Authorization==null");
return(false);
}
if (Authorization.Message == null)
{
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() Authorization.Message==null");
Authorization = null;
return(false);
}
UniqueGroupId = Authorization.ConnectionGroupId;
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() AuthorizationHeader:" + AuthorizationHeader + " blob: " + Authorization.Message.Length + "bytes Complete:" + Authorization.Complete.ToString());
try {
//
// a "bad" module could try sending bad characters in the HTTP headers.
// catch the exception from WebHeaderCollection.CheckBadChars()
// fail the auth process
// and return the exception to the user as InnerException
//
httpWebRequest.Headers.Set(AuthorizationHeader, Authorization.Message);
}
catch {
Authorization = null;
ClearSession(httpWebRequest);
throw;
}
return(true);
}
